Wheelock NS-24MCW-FW This is a two-wire, white Wheelock NS with a multi-candelas strobe. Brand WheelockModel NS-24MCW-FWManufacturer WheelockType Alarm (Horn/Strobe)
Gamewell A8814 Category : GamewellI have no idea what year this alarm is from, only that it’s old and heavy.
Gentex GXS-4-15/75WR Category : GentexThe previous owner of this alarm “modified” the wire leads coming out of the back.
Cerberus Pyrotronics EH-24S Category : Cerberus PyrotronicsThis unit is missing the large capacitor off of its circuit board.